Renewable Energy Can We Rely on Wind and Solar Energy? 4 weeks ago   09:21

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Bozeman Science
028 - Renewable Energy

In this video Paul Andersen discusses the technology, advantages and disadvantages of six sources of renewable energy; biomass, hydroelectric, solar, geothermal wind, and hydrogen. He also explains how changes in the storage and flow of energy in our power grid must be improved. He also lists the energy returned over energy invested ration for the various forms of energy.

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Music Attribution

Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License

Outro
Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory

All of the images are licensed under creative commons and public domain licensing:

afloresm. (2007). Español: Solúcar PS10 es una planta solar termoeléctrica por tecnología de torre, la primera en el mundo explotada comercialmente. Retrieved from https://commons.wikimedia.org/wiki/File:PS10_solar_power_tower.jpg
Andrewglaser. (2009). English: The Solar Settlement with the Sun Ship in the background: Freiburg, Germany. Retrieved from https://commons.wikimedia.org/wiki/File:SoSie%2BSoSchiff_Ansicht.jpg
Canada, A. D. from W. Yukon. (2012). Woodpile. Retrieved from https://commons.wikimedia.org/wiki/File:Woodpile_(6885117855).jpg
company, J. J. owner of A. H. S. an appliance. (2013). English: Here is a picture of a man stoking the fire in a wood burning stove. Retrieved from https://commons.wikimedia.org/wiki/File:Stoking-the-fire.JPG
Delphi234. (2014). English: Total world energy consumption by source 2013, from REN21 Renewables 2014 Global Status Report. Retrieved from https://commons.wikimedia.org/wiki/File:Total_World_Energy_Consumption_by_Source_2013.png
EarthBy barretr. (n.d.). Retrieved from https://openclipart.org/detail/3320/earth
Energy, D. of. (2010). English: Geothermal energy setup. Retrieved from https://commons.wikimedia.org/wiki/File:GEOTHERMAL_ENERGY_tapping.png
en.wikipedia, O. uploader was V. at. (2007). English: A particle motion in an ocean wave. Retrieved from https://commons.wikimedia.org/wiki/File:Wave_motion-i18n-mod.svg
Germany, J. from S. (2005). English: Wind turbines in a rapeseed field in Sandesneben, Germany. Retrieved from https://commons.wikimedia.org/wiki/File:Alternative_Energies.jpg
Hijau, B. (2008). Wood fuel heater. Retrieved from https://commons.wikimedia.org/wiki/File:Wood_fuel_heater20080102.jpg
Hillewaert, H. (2008). English: Newly constructed windmills D4 (nearest) to D1 on the Thornton Bank. Retrieved from https://commons.wikimedia.org/wiki/File:Windmills_D1-D4_(Thornton_Bank).jpg
http://www.eere.energy.gov. ([object HTMLTableCellElement]). English: Passive solar heating illustration. Retrieved from https://commons.wikimedia.org/wiki/File:Illust_passive_solar_d1.gif
Institut, P. (2006). Original Passivhaus, Darmstadt, in spring. Retrieved from https://commons.wikimedia.org/wiki/File:Passivhaus_Darmstadt_Kranichstein_Fruehling_2006.JPG
KVDP. (2008). English: A picture of a house fitted with thermodynamic panels. Retrieved from https://commons.wikimedia.org/wiki/File:ThermodynamicPanelsInstalled.jpg
Ledebur, A. (1895). English: Charcoal pile. Retrieved from https://commons.wikimedia.org/wiki/File:Meule_charbon_bois.jpg
m, dan. (2007). English: Power grid Gowkthrapple Pylons and power cables. Retrieved from https://commons.wikimedia.org/wiki/File:Power_grid_Gowkthrapple_-_geograph.org.uk_-_626930.jpg
Photographer, D. A. R. (2005). English: Title: Technology: Lab. Retrieved from https://commons.wikimedia.org/wiki/File:Ethyl_alcohol_usp_grade.jpg
Rolypolyman. (2008). English: United States Power Grid. Retrieved from https://commons.wikimedia.org/wiki/File:UnitedStatesPowerGrid.jpg
Romary. (2007). Français : Charbon de bois. Retrieved from https://commons.wikimedia.org/wiki/File:Charbon_de_bois_rouge.jpg
Shilsholepointe.com, E. S. (2010). English: Reporting from ShilsholePointe.com Geo Homes,. Retrieved from https://commons.wikimedia.org/wiki/File:Geothermal_shilsholepointe.jpg
Shizhao拍摄. (2005). English: Biodiesel sample. Retrieved from https://commons.wikimedia.org/wiki/File:Biodiesel.JPG
Technologies, O. P. (2011). English: OPT’s PB150 PowerBuoy. Retrieved from https://commons.wikimedia.org/wiki/File:Optbuoy.jpg
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Comments 40 Comments

Gabe Gemma
Hello Andrew
abdi ali Guuleed
Tanks you gave me good explanation
Władca Wymiaru
Oh please:
terrible truth about "renewables"
https://w-vidz.com/videow/gsc1wcFB50i
bad for human health:
https://w-vidz.com/videow/Yq5C72oSpHe
it COST A LOT:
https://w-vidz.com/videow/L2ADgbkF8C0
it just CAN'T be done:
https://w-vidz.com/videow/5w8TT01R89w

The ULTIMATE energy source is there:
https://upload.wikimedia.org/wikipedia/commons/3/30/Lwrvslftr2.png
over 200 times more energy
http://lftrnow.com/wp-content/uploads/2015/05/2-billion-years1.jpg
near endless source of energy...
https://w-vidz.com/videow/cxCY54puonm
50 quadrillion dollars discovery
Shanta Hsieh
If you like to make your own energy you should go to Avasva
Ebru Askn
Thanks for sharing this information with us. Su usefull.
C4pT1oN 0002831
Say EINSTEIN. Then use the three letters EIN when saying Turb-INE.
Kadin Hernandez
My power bill was $300 this previous month. It seemed absurd to me that it would reach this high. Something had to be done. With the generating power method “boma fetching unique” (Google it), my electric bill is now diminished by around 60% because I was able to produce power, also. And that`s not just temporarily-that`s forever.
Lane Gaspar
There should be no difficulty in trying to decrease your utility bill. In fact, it’s the easy options we make which could have a biggest impact. By using this generating power technique “boma fetching unique” (Google it), you can make your own power and save cash on bills.
Nathaniel Banks
*I have been in the renewable energy field for some time now and have used many products for instructional purposes, but this [link here >>>**https://t.co/eSzViNZ6SY** ] is the best. It has all the material needed to get people here in the IBEW up and running for the installation and design of solar systems*
Michael Crowder
*if anyone is looking for some alternative energy sources then I recommend guide from this website since it's very well explained and also if you have any question they're supports is great [Awesome Plan Here >>>**https://plus.google.com/u/3/113778429958471787540/posts/67MrRb1YGej** ]. These days electricity cost a lot so why not save your money*
Pragna Parikh
That was very helpful.
Orgasor
Binge watching all your videos for tomorrow's AP Environmental Science Exam at 8 AM, Wooooo, so excited :( Hope the exam goes well, also great work on these videos Mr. Anderson.
Erik Sundell
Well produced videos. But as a teacher in physics I dare not use them to educate my pupils, since the errors are to big and they will be misled. Start by fixing:

Error 1: Watts is not a measure of energy. TWh, kWh and J are common measures of energy though. What did you really mean with your numbers?
SemorreButte
Your Outro Sounds like the ending of Mr.Bightside by The Killers
Utkarsh Mishra
How did you calculate that?
Daniel Castro
You're the best! Thank you
Brandon Gray
Your vids are so damn boring... 😴😴 we watch you in science class and I can't make it through half of your video without falling asleep 😴 do something to make it more fun so I can actually learn thanks
Nevouti
wind turbans lol
SSS
Great explanation..!
Venkateshwaran M
paul anderson sir can u help me in any video regarding equilibrium
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Can We Rely on Wind and Solar Energy? Renewable Energy 4 weeks ago   04:24

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Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for Industrial Progress explains.
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Script:

Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem?

Why do solar and wind combined provide less than 2% of the world’s energy?

To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful.

For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful.

Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive.

The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem.

The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy.

For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy.

For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers.

And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel.

Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy.

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